Polishing equipment for coil nail blank

By introducing burr recycling components into the rolling nail embryo polishing equipment, the problem of burr recycling in existing equipment is solved, and efficient recycling and utilization of resources is achieved.

CN222986626UActive Publication Date: 2025-06-17JIANGSU NAIAO METALS PROD CO LTD
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Patent Information

Application Number
CN202422170350.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-05
Publication Date
2025-06-17
Estimated Expiration
2034-09-05

AI Technical Summary

Technical Problem

There is a lack of equipment for recycling polishing burrs in existing staple-blind polishing equipment, resulting in waste of resources.

Method used

A polishing device for rolled nail embryos is designed, including polishing barrel assembly, polishing assembly, cleaning assembly and burr recycling assembly. The burr recovery assembly includes a slag suction channel, a barrier net, a slag delivery pipe and a slag fan for absorbing and recycling polished burrs.

Benefits of technology

The polished burrs are effectively recycled, avoiding waste of resources, and improving the environmental protection and economicality of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The polishing equipment comprises a polishing barrel assembly, a polishing assembly, a cleaning assembly and a burr recovery assembly, the interior of the polishing barrel assembly is fixedly connected with the polishing assembly, the rear end of the polishing barrel assembly is fixedly connected with the cleaning assembly, and the upper end of the polishing barrel assembly is fixedly connected with the burr recovery assembly. The polishing machine is characterized by further comprising a polishing barrel assembly, the polishing barrel assembly comprises a support, the upper end of the support is fixedly connected with a polishing barrel, a motor groove, a display controller and an opening and closing cover are arranged on the right side of the polishing barrel, the display controller is fixedly connected to the right side of the support, and the opening and closing cover is rotationally connected to the upper end of the polishing barrel. And by arranging the burr recycling assembly capable of recycling burrs after polishing, the burrs can be recycled after the coil nails are polished, and waste is avoided.
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Description

Technical Field

[0001] The utility model relates to the field of coil nail polishing, in particular to a polishing device for coil nail blanks. Background Technique

[0002] Polishing refers to a processing method that uses mechanical, chemical or electrochemical actions to reduce the surface roughness of a workpiece to obtain a bright and flat surface. It is a finishing process that uses a polishing tool and abrasive particles or other polishing media to modify the surface of the workpiece. Polishing cannot improve the dimensional accuracy or geometric shape accuracy of the workpiece, but aims to obtain a smooth surface or mirror gloss. Sometimes it is also used to eliminate gloss (matting). Usually, a polishing wheel is used as the polishing tool. The polishing wheel is generally made of multiple layers of canvas, felt or leather laminated together and clamped by metal round plates on both sides. The edge of the wheel is coated with a polishing agent evenly mixed with fine abrasive powder and grease, etc.

[0003] For example, a polishing device for coil nail blanks (authorized announcement number CN218488090U) includes a base. A box body is installed on the top of the base. A feeding table is installed inside the box body. An activity port is opened on the base. A blocking plate is installed in the activity port. A material lifting component is installed on the top of the blocking plate. A feeding plate is arranged below the blocking plate. A lifting component fixed to the bottom of the blocking plate is installed on the feeding plate.

[0004] The above device quickly exports the coil nail blanks and polishing materials in the box body through a spiral blade and exports them together from the feeding plate, which is convenient to use. However, there is no device in the above device that can recycle the burrs after polishing, resulting in waste of the burrs that cannot be recycled after polishing the coil nails in the above device. Content of the Utility Model

[0005] Therefore, in order to solve the above deficiencies, the utility model provides a polishing device for coil nail blanks here.

[0006] The present utility model is implemented as follows. A polishing device for coil nail blanks is constructed. The device includes a polishing barrel assembly, a polishing assembly, a cleaning assembly, and a burr recovery assembly. The polishing barrel assembly is fixedly connected to the polishing assembly inside, the rear end of the polishing barrel assembly is fixedly connected to the cleaning assembly, and the upper end of the polishing barrel assembly is fixedly connected to the burr recovery assembly. It is characterized in that: it further includes a polishing barrel assembly. The polishing barrel assembly includes a bracket, the upper end of the bracket is fixedly connected to a polishing barrel, the polishing barrel has a motor slot on the right side, a display controller, the display controller is fixedly connected to the right side of the bracket, an opening and closing cover, the opening and closing cover is rotatably connected to the upper end of the polishing barrel, a discharge pipe, the discharge pipe is fixedly connected to the lower end of the polishing barrel, a first motor, the first motor is fixedly connected to the lower end of the discharge pipe, a spiral blade, the lower end of the spiral blade is fixedly connected to the driving shaft of the upper end of the first motor, and the spiral blade is rotatably connected to the rear end inside the discharge pipe.

[0007] Preferably, the polishing assembly includes a second motor, the second motor is fixedly connected to the right side of the polishing barrel, a first bevel gear, the lower end of the first bevel gear is fixedly connected to the driving shaft of the upper end of the second motor, the lower end of the first bevel gear is rotatably connected to the lower end of a connecting frame, a second bevel gear, the second bevel gear meshes with the first bevel gear, the second bevel gear is rotatably connected to the left side of the connecting frame, a third bevel gear, the third bevel gear also meshes with the first bevel gear, the third bevel gear is rotatably connected to the right side of the connecting frame, a rotating polishing inner hub, the rear end of the rotating polishing inner hub is fixedly connected to the second bevel gear, the front end of the rotating polishing inner hub is rotatably connected to the polishing barrel, the rear end of the rotating polishing inner hub is rotatably connected to the inner center of the third bevel gear, an inner hub frame, the inner hub frame is fixedly connected to the front end of the rotating polishing inner hub, a polishing brush, the polishing brush is fixedly connected between the inner hub frame and the outer hub frame, a connecting frame, the upper end of the connecting frame is also rotatably connected to the rotating polishing inner hub, an outer hub frame, the rear end of the outer hub frame is fixedly connected to the third bevel gear, and the front end of the outer hub frame is rotatably connected to the polishing barrel and the rotating polishing inner hub.

[0008] Preferably, the cleaning assembly includes an electric heating element, the electric heating element is fixedly connected inside the polishing barrel, a wire, the front end of the wire is fixedly connected to the electric heating element, an infusion rack, the infusion rack is fixedly connected to the rear end of the polishing barrel, a nozzle, the nozzle is fixedly connected to the front end of the infusion rack, an infusion pipe, the upper end of the infusion pipe is fixedly connected to the infusion rack, a water pump, the upper end of the water pump is fixedly connected to the infusion pipe, and the water pump is fixedly connected to the rear end of the polishing barrel.

[0009] Preferably, the burr recovery assembly includes a slag suction channel fixedly connected to the upper end of the polishing barrel, a chute provided at the upper end of the slag suction channel, a barrier net slidably connected to the slag suction channel through the chute, a slag conveying pipe with its upper end fixedly connected to the slag suction channel, a slag suction fan fixedly connected to the upper end of the fixed cover, a fixed cover with its upper end fixedly connected to the lower end of the slag conveying pipe, and chutes also provided at the upper and lower ends of the fixed cover. A slag collection barrel has its top slidably connected to the fixed cover, and a slag filtering net is slidably inserted into the interior of the fixed cover and is placed in front of the slag suction fan.

[0010] Preferably, there are two groups of the brackets, and both are provided at the lower end of the polishing barrel.

[0011] Preferably, there are eight groups of the polishing brushes, and all are provided inside the polishing barrel.

[0012] Preferably, there are three groups of the barrier nets.

[0013] The present utility model has the following advantages: The present utility model provides a polishing device for coil nail blanks through improvement. Compared with the same type of devices, the following improvements are made:

[0014] For the polishing device for coil nail blanks of the present utility model, by providing a burr recovery assembly that can recover the burrs after polishing, the burrs can be recycled and wasted is avoided when the coil nails are polished in this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the structural schematic diagram of the present utility model;

[0016] Figure 2 is the structural schematic diagram of the polishing barrel assembly of the present utility model;

[0017] Figure 3 is the structural schematic diagram of the polishing assembly of the present utility model;

[0018] Figure 4 is the structural schematic diagram of the cleaning assembly of the present utility model;

[0019] Figure 5 is the structural schematic diagram of the burr recovery assembly of the present utility model.

[0020] Wherein: polishing barrel assembly - 1, bracket - 11, polishing barrel - 12, display controller - 13, lid opening and closing - 14, discharge pipe - 15, first motor - 16, spiral blade - 17, polishing assembly - 2, second motor - 21, first bevel gear - 22, second bevel gear - 23, third bevel gear - 24, rotating polishing inner hub - 25, inner hub frame - 26, polishing brush - 27, connecting frame - 28, outer hub frame - 29, cleaning assembly - 3, electric heating element - 31, electric wire - 32, infusion rack - 33, nozzle - 34, infusion pipe - 35, water pump - 36, burr recovery assembly - 4, slag suction channel - 41, sliding chute - 42, barrier net - 43, slag conveying pipe - 44, slag suction fan - 45, fixed cover - 46, slag collection bucket - 47, slag filtering net - 48. Detailed implementation mode

[0021] The following combines the attached Figures 1 to 5 Describe the principles and features of the present invention. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention will be described more specifically by way of example with reference to the accompanying drawings. According to the following description and claims, the advantages and features of the present invention will be clearer. It should be noted that the attached drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0022] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] Embodiment 1:

[0025] Please refer to Figures 1 to 5, A polishing device for a coil nail blank of the present utility model includes a polishing barrel assembly 1, a polishing assembly 2, a cleaning assembly 3, and a burr recovery assembly 4. The polishing barrel assembly 1 is fixedly connected to the polishing assembly 2 inside, the rear end of the polishing barrel assembly 1 is fixedly connected to the cleaning assembly 3, and the upper end of the polishing barrel assembly 1 is fixedly connected to the burr recovery assembly 4. It is characterized in that: it further includes a polishing barrel assembly 1. The upper end of the bracket 11 is fixedly connected to the polishing barrel 12. There is a motor slot on the right side of the polishing barrel 12. The display controller 13 is fixedly connected to the right side of the bracket 11. The opening and closing cover 14 is rotatably connected to the upper end of the polishing barrel 12. The discharge pipe 15 is fixedly connected to the lower end of the polishing barrel 12. The first motor 16 is fixedly connected to the lower end of the discharge pipe 15. After the first motor 16 is started, it can drive the spiral blade 17 to rotate. The lower end of the spiral blade 17 is fixedly connected to the drive shaft at the upper end of the first motor 16. The spiral blade 17 is rotatably connected to the rear end inside the discharge pipe 15. One end of the discharge pipe 15 away from the spiral blade 17 is inclined downward to facilitate the sliding of materials. There are two groups of brackets 11 and both are arranged at the lower end of the polishing barrel 12;

[0026] The polishing assembly 2, the second motor 21 is fixedly connected to the right side of the polishing barrel 12. The lower end of the first bevel gear 22 is fixedly connected to the drive shaft at the upper end of the second motor 21. After the second motor 21 is started, it can drive the first bevel gear 22 to rotate and drive the second bevel gear 23 and the third bevel gear 24 to rotate. The lower end of the first bevel gear 22 is rotatably connected to the lower end of the connecting frame 28. The second bevel gear 23 meshes with the first bevel gear 22. The second bevel gear 23 is rotatably connected to the left side of the connecting frame 28. The third bevel gear 24 also meshes with the first bevel gear 22. The third bevel gear 24 is rotatably connected to the right side of the connecting frame 28. The rear end of the rotating polishing inner hub 25 is fixedly connected to the second bevel gear 23. The front end of the rotating polishing inner hub 25 is rotatably connected to the polishing barrel 12. The rear end of the rotating polishing inner hub 25 is rotatably connected to the inner center of the third bevel gear 24. The inner hub frame 26 is fixedly connected to the front end of the rotating polishing inner hub 25. The polishing brush 27 is fixedly connected between the inner hub frame 26 and the outer hub frame 29. The upper end of the connecting frame 28 is also rotatably connected to the rotating polishing inner hub 25. The rear end of the outer hub frame 29 is fixedly connected to the third bevel gear 24. The front end of the outer hub frame 29 is rotatably connected to the polishing barrel 12 and the rotating polishing inner hub 25. There are eight groups of polishing brushes 27 and all are arranged inside the polishing barrel 12;

[0027] The cleaning assembly 3, the electric heating element 31 is fixedly connected inside the polishing barrel 12. The front end of the electric wire 32 is fixedly connected to the electric heating element 31. The infusion rack 33 is fixedly connected to the rear end of the polishing barrel 12. The nozzle 34 is fixedly connected to the front end of the infusion rack 33. The upper end of the infusion pipe 35 is fixedly connected to the infusion rack 33. The water pump 36 is fixedly connected to the upper end of the infusion pipe 35. After the water pump 36 is started, it can pump the external cleaning water through the infusion pipe 35 and transport it into the infusion rack 33 and spray it out from the nozzle 34 into the polishing barrel 12. The water pump 36 is fixedly connected to the rear end of the polishing barrel 12.

[0028] The present utility model provides a polishing device for coil nail blanks through improvement, and its working principle is as follows;

[0029] First, when using this device, first place this device in the working area, and then connect the device to an external power supply to provide the electric energy required for the operation of this device;

[0030] Second, when this device needs to be used, the opening and closing cover 14 can be pulled and rotated to open first, then the coil nails and polishing materials are input into the polishing barrel 12, and then the opening and closing cover 14 is closed. Then, the second motor 21 is controlled to start through the display controller 13. After the second motor 21 starts, it can drive the first bevel gear 22 to rotate, driving the second bevel gear 23 and the third bevel gear 24 to rotate clockwise and counterclockwise. When the second bevel gear 23 and the third bevel gear 24 rotate clockwise and counterclockwise, they can drive the rotating polishing inner hub 25 and the inner hub frame 26 to rotate clockwise and the outer hub frame 29 to rotate counterclockwise. When the inner hub frame 26 and the outer hub frame 29 rotate, they can drive the polishing brush 27 to rotate and contact the coil nails and polishing materials to polish the coil nails. After the polishing of the coil nails is completed, the second motor 21 can be controlled to stop, and the first motor 16 is started to drive the spiral blade 17 to rotate, discharging the coil nails and polishing materials in the polishing barrel 12 through the discharge pipe 15.

[0031] Third, when this device needs to be cleaned, the water pump 36 can be controlled to start through the display controller 13. After the water pump 36 starts, the external cleaning water can be pumped out through the infusion pipe 35 and transported into the infusion rack 33 and sprayed out from the spray head 34 into the polishing barrel 12. Then, the electric heating element 31 is controlled to start to heat the cleaning water in the polishing barrel 12 to facilitate cleaning. Then, the second motor 21 is started to drive the inner hub frame 26, the polishing brush 27 and the outer hub frame 29 to rotate to stir the cleaning water and clean the inside of the polishing barrel 12.

[0032] Embodiment Two:

[0033] Please refer to Figures 1 to 5A polishing device for a roll nail blank of the present utility model. Compared with the first embodiment, this embodiment further includes: a burr recovery assembly 4. The slag suction channel 41 is fixedly connected to the upper end of the polishing barrel 12. The chute 42 is arranged at the upper end of the slag suction channel 41. The barrier net 43 is slidably connected to the slag suction channel 41 through the chute 42. The upper end of the slag conveying pipe 44 is fixedly connected to the slag suction channel 41. The slag extraction fan 45 is fixedly connected to the upper end of the fixed cover 46, and the air inlet end of the slag extraction fan 45 is inserted into the inside of the fixed cover 46 for extracting the air inside the fixed cover 46. The upper end of the fixed cover 46 is fixedly connected to the lower end of the slag conveying pipe 44. After the slag extraction fan 45 is started, the burrs lifted at the lower end of the slag suction channel 41 can be absorbed and conveyed into the slag collection barrel 47 through the slag conveying pipe 44. After a certain amount of burrs are accumulated in the slag collection barrel 47, the slag collection barrel 47 can be pulled away from the fixed cover 46 for recovery. The upper and lower ends of the fixed cover 46 are also provided with chutes 42, and the top of the slag collection barrel 47 is slidably connected to the fixed cover 46. There are three groups of barrier nets 43 in total. The filter slag net 48 is slidably inserted into the inside of the fixed cover 46 and is placed in front of the slag extraction fan 45.

[0034] In this embodiment:

[0035] First, when it is necessary to recover burrs, when the polishing brush 27 polishes the roll nail blank, the burrs will be scraped off and lifted. Then, the display controller 13 is used to control the start of the slag extraction fan 45. After the slag extraction fan 45 is started, the burrs lifted at the lower end of the slag suction channel 41 can be absorbed and conveyed into the slag collection barrel 47 through the slag conveying pipe 44. When the burrs are absorbed, the barrier net 43 can prevent the roll nail blank from entering the slag suction channel 41 and damaging the slag extraction fan 45. When the burrs are absorbed into the fixed cover 46, they can contact the filter slag net 48, so that the filter slag net 48 can prevent the burrs from entering the slag extraction fan 45 and damaging the slag extraction fan 45. And after the burrs are filtered by the filter slag net 48, the burrs can fall into the slag collection barrel 47 due to gravity. When it is necessary to replace the barrier net 43 and the filter slag net 48, the barrier net 43 and the filter slag net 48 can be pulled to slide the filter slag net 48 and the barrier net 43 out of the slag suction channel 41 and the fixed cover 46, and then the new barrier net 43 and the barrier net 43 can be inserted into the slag suction channel 41 and the fixed cover 46 to complete the replacement.

[0036] The present utility model provides a polishing device for a roll nail blank through improvement. By setting the burr recovery assembly 4 that can recover the burrs after polishing, the burrs can be recovered and utilized in the device after the roll nails are polished, avoiding waste.

[0037] The above has shown and described the basic principles, main features and advantages of the present utility model. Moreover, the standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can all be customized according to the descriptions in the specification and the drawings. The specific connection manners of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection manner in the prior art, details are not described herein again.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A polishing device for a coiled nail blank, comprising a polishing barrel assembly (1), a polishing assembly (2), a cleaning assembly (3), and a burr recovery assembly (4), wherein the polishing barrel assembly (1) is fixedly connected to the polishing assembly (2), the rear end of the polishing barrel assembly (1) is fixedly connected to the cleaning assembly (3), and the upper end of the polishing barrel assembly (1) is fixedly connected to the burr recovery assembly (4), characterized in that: Also included is a polishing barrel assembly (1), the polishing barrel assembly (1) comprising: A bracket (11), the upper end of the bracket (11) being fixedly connected to the polishing barrel (12); A polishing barrel (12), wherein a motor slot is provided on the right side of the polishing barrel (12); A display controller (13), wherein the display controller (13) is fixedly connected to the right side of the bracket (11); An opening and closing cover (14), wherein the opening and closing cover (14) is rotatably connected to the upper end of the polishing barrel (12); A discharge pipe (15), wherein the discharge pipe (15) is fixedly connected to the lower end of the polishing barrel (12); A first motor (16), the first motor (16) being fixedly connected to the lower end of the discharge pipe (15); A spiral blade (17), wherein the lower end of the spiral blade (17) is fixedly connected to the driving shaft at the upper end of the first motor (16), and the spiral blade (17) is rotatably connected to the rear end of the discharge pipe (15).

2. The polishing device for coiled nail blanks according to claim 1, characterized in that: The polishing assembly (2) comprises: A second motor (21), the second motor (21) being fixedly connected to the right side of the polishing barrel (12); A first bevel gear (22), wherein the lower end of the first bevel gear (22) is fixedly connected to the driving shaft at the upper end of the second motor (21), and the lower end of the first bevel gear (22) is rotatably connected to the lower end of the connecting frame (28); A second bevel tooth (23), the second bevel tooth (23) meshing with the first bevel tooth (22), the second bevel tooth (23) being rotatably connected to the left side of the connecting frame (28); A third bevel tooth (24), the third bevel tooth (24) also meshes with the first bevel tooth (22), and the third bevel tooth (24) is rotatably connected to the right side of the connecting frame (28); A rotating polishing inner hub (25), wherein the rear end of the rotating polishing inner hub (25) is fixedly connected to the second bevel gear (23), the front end of the rotating polishing inner hub (25) is rotationally connected to the polishing barrel (12), and the rear end of the rotating polishing inner hub (25) is rotationally connected to the inner center of the third bevel gear (24); An inner wheel frame (26), wherein the inner wheel frame (26) is fixedly connected to the front end of the rotating polishing inner wheel (25); A polishing brush (27), wherein the polishing brush (27) is fixedly connected between the inner wheel frame (26) and the outer wheel frame (29); A connecting frame (28), the upper end of which is also rotatably connected to the rotating polishing inner wheel (25); An outer wheel frame (29), wherein the rear end of the outer wheel frame (29) is fixedly connected to the third bevel gear (24), and the front end of the outer wheel frame (29) is rotatably connected to the polishing barrel (12) and the rotatable polishing inner wheel (25).

3. The polishing device for coiled nail blanks according to claim 1, characterized in that: The cleaning component (3) comprises: An electric heating element (31), wherein the electric heating element (31) is fixedly connected to the polishing barrel (12); An electric wire (32), the front end of which is fixedly connected to the electric heating element (31); An infusion stand (33), wherein the infusion stand (33) is fixedly connected to the rear end of the polishing barrel (12); A nozzle (34), wherein the nozzle (34) is fixedly connected to the front end of the infusion stand (33); An infusion tube (35), the upper end of which is fixedly connected to the infusion stand (33); A water pump (36), the upper end of which is fixedly connected to the infusion tube (35), and the water pump (36) is fixedly connected to the rear end of the polishing barrel (12).

4. The polishing device for coiled nail blanks according to claim 1, characterized in that: The burr recovery component (4) comprises: A slag suction channel (41), wherein the slag suction channel (41) is fixedly connected to the upper end of the polishing barrel (12); A chute (42), wherein the chute (42) is arranged at the upper end of the slag suction channel (41); A barrier net (43), wherein the barrier net (43) is slidably connected to the slag suction channel (41) via a chute (42); A slag conveying pipe (44), the upper end of which is fixedly connected to the slag suction channel (41); A slag extraction fan (45), wherein the slag extraction fan (45) is fixedly connected to the upper end of the fixed cover (46); A fixed cover (46), the upper end of which is fixedly connected to the lower end of the slag conveying pipe (44), and the upper and lower ends of the fixed cover (46) are also provided with chutes (42); A slag collecting bucket (47), the top of which is slidably connected to a fixed cover (46); A filter residue net (48) is slidably inserted into the interior of the fixed cover (46) and connected thereto and is placed at the front end of the slag extraction fan (45).

5. The polishing device for coiled nail blanks according to claim 1, characterized in that: The brackets (11) are provided in two groups and are both arranged at the lower end of the polishing barrel (12).

6. The polishing device for coiled nail blanks according to claim 2, characterized in that: The polishing brushes (27) are provided in eight groups in total and are all arranged in the polishing barrel (12).

7. The polishing device for coiled nail blanks according to claim 4, characterized in that: The barrier nets (43) are provided in three groups in total.

Citation Information

Patent Citations

  • Polishing equipment for coil nail blank

    CN218488090U